Safety device for bolt-machines.



a T. A. WELGH. SAFETY DEVICE FOR BOLT MACHINES.

APPLICATION FILED NFL 4, 1913- I 1 1 1 1 ,42 L Patented Sept. 22, 1914.

3 SHEETS-SHEET l.

THE Nor nls PETERS cc. FHOTO-LITHO, WASHINGTON. D4 C.

T. A. WEI-OH.

SAFETY DEVICE FOR BOLT MACHINES.

APPLICATION FILED OCT. 4. 1913.

Patented Sept. 22, 1914.

3 SHEETSSHEET 2.

E 6. -Eg i i v as '55 FR] 2 I fig as 32 2 Illlx t i '27 Lh Mfl .l awwmbw T- E Q 1 wwwemo I 111:7 NORRIS Flame: (:0 PIIOYOLIFNO.LVASHIN(ZTIJN1).!3,

T; A. WELCH.

SAFETY DEVICE FOR BOLT MACHINES APPLICATION FILED 0GT.'4, 1913.

1,1 1 1 ,424. P n ed Sept. 22, 1914.

3 SHEETSSHBET 3.

THE NOR'RIS PETERS 60.. PHOTU-LITHQ, wAsHlNGmN. n. c.

" being properly fed.

UNITEDSTA S PATE Y F I Tnvro'rHY-nfWELcn, or SAYIRE, fENNgYLVANIA.

T0 all whom it may concern ai eitizenbf the Unitedi'States, residing at 313*Nbrth Lehigh avenue, Sayre, in. the

county of Bradfordand State of Pennsyl vania have invented certain new and useful Improvements in Safety Devices for'Bolt Machines; and I do hereby'declare the folv lowing to be afull, clear,andjexact descr'ip;

tion of the invention, such as will enable hisinvention isto pro 'fide The obj ect of a safety device for a boltmachine'adapted I, placed orwhen aforeign substancefalls'beto yield'when the boltblankis improperly tween thedies thereby protecting the latter against-breakage ormutilation Another object ,is to provide'jmeansfor locking, the .yieldable safety devicejfag'ainst' pera ti on while the dies of thejmachine are "In the accompanying"drawing wherein is r so shjo'wn an approved 'em'bodimentof'my in- A agalnst the inner nut The wedge ineni ber' 27 is; provided with a suitable' slot "for vention, Figure "1 represents a 'top plan view of aboltinaking machine of ordinary construction, showing thei application of, my

improved safety device attachedthereto; E, Fig. 2, representsa fragmentary sideeleva-t tion ofthe machine, and safety device.

- 3,repres'ents a-fra'gmentary vertical, tran's sectional view on 'the line 9+9, of Fig. 17

verse sectional view through the movable die block; and yieldable operating means there-L for. Fig. 4, represents.,a1top planjvie'w of thewedge member. jFig. .5-, represents a, side elevationthereof, Fig. 6, represents'a front.

elevation thereof, ,Fig. 7 represe'nts a fragmentary detail view in side elevation of the i togglehead. Fig/8, is-a sectional viewgon'j 40 the line 8-8 of Fig. 7.. Fig. 9 represents a Fig. 10,1represents. a side elevationof the looselolock. Fig; 11,-represents a plan 'view' thereof, and Fig. 12, represents a planfview of one'of a pair of guide'members. for one of the movable partsof the safety device.

Referring to the drawing in detail, 15 indicatesthe frame of a modern type of "b'Oflt' making"ma"chine, the operative parts of which are driven bythe crank shaft 16, over which are connected pitmen 17. One of the pitmen is connected as usual with the head- 'lng die .18, while the other pitman is connected with the toggle head 19 which latter is clearly illustrated in Figs. 7 8, and 9. The

stati nary e is indi ated at 20, and the m vsnm ryrnvicn roRnoLTMhoHINns. I i

Specificatiou of Letters lfaten tr PatntedS bfQZZ, 1914. Applicationfiled'october4, 191% 1 Sei ialNo. 793,-32O. j i

an uest '21., the latter fbeing connected to the to-ggle headflQ through the toggle links, 22, of the two-way toggle bloclc23, and "the die block 24:, in the usual manner. The other link ofithe toggle block 23, is connected with a looseblock 25 having an 'inclined'face 26 abutting the similarly inclined face of the wedge member 27, having 'upwardly'extend lng rods, '28 work ng through a suitable v p 7 bracket 29 against the tension of springs 30. other skilled in the art towhiclyitappen tains to make and use thesame; j

'A pair of guide members 31' are secured to' th'e p of theframe 15 and extendftrans;

versely of the latter and are adapted to I .lguide'themovement of the lock bar 32, which In its normal position orwhen the dies are open is removed from the of the wedge membjerj2 7. The inner end" of a threaded rod is pivoted at 34to' the} movable die holder-124, extends through the locking member32 and is provide (1 upon oppositesides oif the latter with mass A s ring-13 113 e .d P W t r 3 between the I ki -g member 32 and outer t 35 SQ manor;

mally hold said locking memberqinwardly i accoinmodating the rod :are, fed in the usual manner to the dies 18, 20-, and 21, and the machine is driven from a lsui'tablefsource of power. As the dies close over af'properly placed blank the locking jmembe'r 32 is moved into locking position over the wedge member 27, as shown in Fig. i 3,.preventing said wedgememberfrom raising. However, should a blank be improperly gripped, it is obvious that the resistanceto nism will be nearly simultaneous with its initial closing movement, and Ethel. jwedging member 27 will beipushed, upwardly by the the improperlyplaced blank and possible the movementv of the dies and toggle mecha injury thereto is also prevented; As the dies I are again opened, the blank drops therefrom and the springa'ctuated wedge l 'inember 27 assumesits initialposition as clearly shown in Fig. -3,'for the next operation. It will be understood that the nuts 35 may be adjusted so as to accommodate interchanging and adjusting of the dies and other parts of the machine. i 7

Ha i g t us fully de cribed my invention Iv yielding.

what I claim as new and desire to Letters-Patent is;

1. Ina device of the reciprocating member slidable in said frame, a .tWo Way toggle block, connected. to said reciprocating member, one link of said toggle block being connected to said'movable die, yieldable means also connected to the opposite link of said toggle block, and 'adjustable means; for locking said yieldablemeans against operation.

H 2. In a device of the class described' a frame, a stationary'die, a movable die, are-I ciprocating' 1 member, capable of sliding movement 111 sa d frame, a two Way toggle block, connected to sald rec1procat1ng member, means for connecting said toggle block with said movable die in one direction,

yieldable means connected With said toggle block in the other direction, and means for locking said last "named means against 8, In a device of the class described, a frame, a stationary d1e, a movable dle, a reciprocating member, slidably mounted 1n said frame and toggle block p voted to, said reciprocating memb'er, means for connecting said frame, ativo Way toggle block pivoted 'toIsa d reclprocatlng member, means for 1 said toggle block in onedirection with said movablefdie, yieldable means connected with said'togg'le block in theother' directionand movable means for locking said ;yieldable means against'operation. I g

lIIn a deviceof the class described, a

frame, alstationary die, a movable die, a re-' ciprocatmg member s'lidably mounted upon 3 i said movable die." 7

connecting saidtoggle block witli said movable-die, yieldable means also connectedlto said toggle block but oppositely tofsaid mov able die, and means to lock said yieldable means againstoperation, subsequent to the M initiallfclosing movement of said movable 45 Ina device of the class described, a .l.? lme, a stat onary the, a movable die, a re clprocating member mounted on said frame,

die.

a two way toggle blockpivotedto said reciprocating, member, means for operativ'ely connecting sai'dtoggle block to said movable die in one 'directiom'yieldable means connected with] said toggle block in the other direction, and positively actuated meansa for locking said yieldable "means 'C opies of tifis patent may be obtained for se ur y] a v v. .closing of said yieldab ledie. class descrlbed, a frame, a stationary die,-a movable die, .a'

1 and means operatively connecting said lock ably connecting connecting" said toggle block to said movable die in one direction, yieldablemeans connected with said toggle block in the other-direction, andmeans operatively connected Withsaidfmovable die for locking said yieldable means againstoperation 7. In a device of the "class .des'crib'e'dfa frame, astationary die, a movable die, a reclprocating'member mounted on said frame, atwo Way toggle block p voted to said re ciprocating membeninea'ns for operatively connecting said toggle block to said movable die in one direction, yieldable means con nected vvith s'aid toggle block in the other direction, locking means provided for hold ing said yieldable means against operation,

ing in'eansflivith said movable die; ,7 I

8. In a device of the class described, a frame, a stationary die,"'a movable die, aireciprocatin'g member mounted on saictframe, v a two Way toggle block p voted to saldife ciprocating member, means foij operatively connecting-said toggle block to said'inovable die inone directionfyieldable means con- 1 nected with said toggleblock in the other direction, means for locking said yielding means agamstoperat on, and means ad ustably connecting sa d locking means 'With Ina device of. the class describedfa frame, a stationary die, a movable die,a reciprocating member mounted on said frame,

,a two ay toggle block pivoted to said re? ciprccati'ng members, means for operatively connect ingsa d toggleblock to said movable v diein one,directiomfyieldable -means ,'con-' nected with said toggle blockintliefother directiomland means adjustably and yieldf 7 said locking means with v saifd movable die.

two subscribing Witnesses.

TIMOTHY- A. WELGH'.

Witnesses I WILLi M J HIGGI S,

Wi'LLiAM T. CAREY.

five cents eaten, by addressing the (l onimissionei -of Patents. j

' I Washington, D. G.

I, In testimony whereof I have' 'signed f name to this specification 

